- Treatments
- Skull Base
Stereotactic Radiosurgery for Vestibular Schwannoma
A vestibular schwannoma, also known as an acoustic neuroma, is a benign (non-cancerous) tumour that grows on the vestibulocochlear nerve. This nerve connects the inner ear to the brain and controls balance and hearing. Vestibular schwannomas can cause symptoms like hearing loss, tinnitus (ringing in the ears), dizziness, and, in some cases, facial numbness or weakness.
Why Is Stereotactic Radiosurgery Performed?
This treatment is recommended for patients who:
- Have small to medium-sized vestibular schwannomas that do not require immediate surgical removal
- Are experiencing symptoms like hearing loss or balance issues but prefer a non-invasive option
- Are not suitable candidates for open surgery due to age, health conditions, or personal preference
What Is Stereotactic Radiosurgery?
Stereotactic radiosurgery (SRS) is a non-invasive treatment that uses precisely focused beams of radiation to target and treat vestibular schwannomas. It does not involve traditional surgery but delivers a high dose of radiation directly to the tumour to stop its growth and, in some cases, shrink it.
How Does Stereotactic Radiosurgery Work?
SRS works by delivering radiation that damages the tumour’s cells, preventing them from growing or dividing. Over time, the tumour may shrink or stabilize, reducing pressure on nearby nerves and tissues.
How Is Stereotactic Radiosurgery Done?
Preparation
- Imaging tests like MRI or CT scans are used to pinpoint the tumour’s exact size and location.
- A frame or custom mask is used to keep the head still during the procedure.
Treatment Planning
- A team of specialists creates a detailed plan using advanced software to deliver radiation with precision while avoiding surrounding healthy tissue.
Radiation Delivery
- The patient lies on a treatment table while the machine (such as a Gamma Knife or CyberKnife) delivers focused beams of radiation to the tumour.
- The procedure is painless and typically lasts 1–2 hours.
Post-Treatment
- After the procedure, the patient can usually go home the same day and resume normal activities quickly.
Benefits of Stereotactic Radiosurgery
- Non-Invasive: No incisions or hospital stay required.
- Precise Targeting: Focuses only on the tumour, minimizing damage to healthy tissues.
- Quick Recovery: Patients can return to daily activities almost immediately.
- Hearing Preservation: Offers a better chance of maintaining hearing compared to some surgical approaches.
Risks and Complications
While SRS is generally safe, potential risks include:
- Temporary or permanent hearing loss
- Swelling or inflammation around the tumour, which can cause temporary symptoms like dizziness or facial numbness
- Rare radiation effects on surrounding tissues or nerves
- Tumour regrowth or incomplete control, requiring further treatment
Who Is a Candidate for Stereotactic Radiosurgery?
- Have vestibular schwannomas smaller than 3 centimetres in diameter
- Prefer a non-invasive treatment or cannot undergo open surgery
- Have functional hearing they want to preserve
Recovery and Aftercare
- Immediate Recovery: Most patients can resume normal activities within a day or two.
- Long-Term Monitoring: Regular follow-up imaging, such as MRIs, is necessary to check the tumour’s response to treatment and ensure it does not regrow.
- Symptom Management: Patients may need medications to manage temporary swelling or inflammation.
How It Differs from Surgical Treatments
- Stereotactic Radiosurgery: Non-invasive, works gradually to control tumour growth, and often preserves hearing.
- Open Surgery (e.g., Retrosigmoid or Translabyrinthine Approaches): Involves removing the tumour immediately but requires longer recovery and may result in hearing loss.
- Observation: Monitoring the tumour without treatment, suitable for very small or slow-growing schwannomas.
Outcomes & Conclusion
Stereotactic radiosurgery is highly effective for stabilizing or shrinking vestibular schwannomas. Most patients experience relief from symptoms and excellent long-term control of tumour growth. Hearing and facial nerve function are often preserved in suitable cases.
Stereotactic radiosurgery is a state-of-the-art, non-invasive treatment option for vestibular schwannomas. It provides precise tumour control with minimal recovery time and offers a safe and effective alternative to traditional surgery. With proper follow-up care, patients can achieve excellent outcomes and improved quality of life.
Request an appointment or make an enquiry
Mon to Fri: 9:00am – 1:00pm
2:00pm – 5:00pm
Sat: 9:00am – 1:00pm
Sun & PH: Closed
Mon to Fri: 9:00am – 1:00pm
2:00pm – 5:00pm
Sat: 9:00am – 1:00pm
Sun & PH: Closed
Mount Elizabeth Novena Hospital
Mon to Fri: 9:00am – 1:00pm
2:00pm – 5:00pm
Sat: 9:00am – 1:00pm
Sun & PH: Closed
Mount Elizabeth Orchard
Mon to Fri: 9:00am – 1:00pm
2:00pm – 5:00pm
Sat: 9:00am – 1:00pm
Sun & PH: Closed
